Pulling-machine.



1. H. SCHOTT.

PULLING MACHINE. APPLlcATloN FILED Aue. s. 191s.

1.1 86,4849. Patented June 13, 1916.

1.1H. SCHOTT: PULLING -MACHINE. APPLICATION FILED AUG-5. 19l5.

$1,186,349. Patented June 13, 1916.

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JOHN I-I.k SCHOTT, OF BOULDER, COLORADO.

Futuna-MACHINE.

Application filed August 5, 1915.

To all whom it may concern.'

Be it known that I, JOHN H. SCHOTT, a citizen of the United States,residing at Boulder', in the county of Boulder and State of Colorado,have invented certain new and useful Improvements in Pulling-Machines;

land I do declare the following to be a full,

Q behighly eflicient and durable, and will 20 possess a number ofadvantageous features,

`among the most salient of which is the provision of means wherebyshould breakage of the wire occur, injury to the operator will beprevented. v

Vith this general'obj'ect in view, the invention resides in certain'novel features of construction and in unique combinations of parts to behereinafter fully described and claimed, the descriptive matter beingsupplemented by the accompanying drawings wherein: f

Figure 1 is a side elevation of the invention applied to use, with thecarriage member thereof at the beginning of its working stroke; Fig. 2is a similar view after one working stroke has been completed; Fig. 3 isan elevation of theopposite side of the machine with parts broken awayand in section; Fig. 4t is a top plan view; Fig. 5 is a horizontallongitudinal section taken on the plane designated by the line 5-5 ofFig. l1; Fig. 6 is a vertical transverse section taken on the planeofthe line 6-6 of Fig. 1; Fig. 7 is a similarview viewed on the planeindicated byv the liner 7*-7 of Fig. 1.

In these drawings which constitute a part of the application, and inwhichV similar reference characters designate corresponding partsthroughout the several views, the numeral 1 indicates broadly achannel'- shaped guide member whichfis formed of an elongatedrectangular back plate 2 and a pair of parallel laterally projectinganges 3 preferably though not necessarily formed integrally with theedge portions thereof i Specification of Letters Patent.

. in the y Patent-.ea June 13, 1916.

Serial No.'4 3,854.

and extending in the saine direction therefrom,Y one end of the backplate 2 and the adjacent ends of the flanges 3, being shown as formedintegrally with va hook 4, by means -of which, through theinstrumentality of a chain or the like 5, t-he device may be anchored toa postlas disclosed in Fig. 1, or may be secured to another appropriatetype of anchor.

The inner facing sides of the flanges 3 are provided with longitudinalgrooves 6 re'- ceiving slidably therein, tongues 7 on the opposite edgesof an elongated carriage plate 8, such plate having on one end an ear Y9 towhich is pivoted the offset end of a pitman 10, the other end ofsaid pitman being mounted on anj eccentric wrist pin v11 carried by a.'disk 12 lwhich is rotatably mounted guide member 1 adjacent the hook tthereo The disk 12 is carried by ashaft 13 which extends through theback plate 2 into a gear box 14 and carries a comparatively large gear15 meshing with the driving pinion 16, the gear and pinionbeing bothdisposed in the gear box. For driving the pinion 16, anv appropriatecrank 17 is provided, such crank being positionedY adjacent the back ofthe plate 2, for a reason to be explained as the description proceeds.

Secured ,by screws or the like to one edge portion of the carriage plate8, on the front side thereof, is one or more fixed jaw members 18 havinggripping teeth on one face with which the toothed pulling dogs 19 coact,such dogs 19 being pivoted to the opposite edge portion of the plate 8by removable screws 20 andbeing forced normally toward the jaws 18 byappropriate springs 21.

Rigidly secured by screws or the like to the inner side of one of theflanges 3, is one or more rigid jaw members 18a having serrated facesalined with such faces of the members 18, while pivoted upon removablescrews 20a to ears 22 on the inner side of the opposite flange 3, is oneor more toothed holding dogs 19a.L which are forced normally toward thejaw members 18a by appropriate springs.

In operation, when the machine is to be used for stretching wire or thelike,.the hook 4 is connected by means of the chain 5-or an equivalentdevice with a post or other appropriate anchor, whereupon the wire to bestretched is positioned between the dogs 19 and 19a and the jaw members18 and 18a.

Rotation of the crank 7, will now reciprocate the carriage plate 8, thuscausing the dogs 19 and jaws 18 to move'therewith, the result being thatsuch devices will travel rearwardly upon the wire when the latter isheld by dogs 19a Yand jaws 18a, during the' rearward movement of thecarriage plate, but when said plate movesforwardly, the wire will begripped by the members 18 and 19- and willthus be pulled forwardlybetween the dogs19aand the jaws 18?, the last named members now servingto again grip the wire VVwhile the pulling means again moves rearwardlypreviously to another working stroke.

As above suggested, the machine may be constructed with but one dog 19and one dog 19a, in which case but one member 18 Yand one member 18awill be employed, this construction being capable of use for a`important feature of the invention, since in case of breakage ofthewire, due for instance to a defect therein, the hand of the operatorwill be shielded and thus injury will be prevented. All Working parts ofthe machine are protected either by disposition in the channel-shapedguide 1 or by the gear box 14, whereby such parts may be protected to agreat extent against injury due to rough usage, and all movable parts`are detachably 'secured in place,' whereby new members may besubstituted for those which may become so worn as to render themineffective. In addition to these advantages, attention is directed tothe fact that the face plate of the gear box 14 may be removed,whereupon gears of different ratios may be substituted for the gears 15and 16 shown in the drawings. By so doing, the speed of the rmachine aswell as the power thereof maybe varied at will.

In the drawings, certain specific details of construction have beenshown for accomplishing probably the best results, and in the precedingsuch details have been described, but it is obvious that I need not berestricted thereto otherwise than to the extent to which the appendedclaim limits me.

I claim:

A pulling machine comprising a channelshaped guide havingon the exteriorof its closed side a gear box, a reciprocatory carriage confined in saidguide, a crank likewise confined therein but spaced from the carriage, apitman connecting the crank and the carriage, Va shaft extending fromthe Acrank into the gear box, a gear on said shaft confined in the gearbox, an additional gear meshing with the aforesaid gear and likewiseconfined in the gear box, a hand crank for rotating said additionalgear, and independent gripping devices carried by the guide and by thecarriage.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

JOHN H. SCHOTT. IVitnesses:

FRANCIS M. MoMAIIoN, EUGENE J. GILLIS.

Copies of this patent may be obtained for ve cents each, by addressing`the Commissioner of Patents. v Washington, D. C.

